$x^2\:-\:3x$
$\lim_{x\to1\:}2x^4$
$\lim_{z\to i}\left(\frac{1+z^{10}}{1+z^{14}}\right)$
$1+3r>10$
$-2m+5m+-6$
$\int\frac{x+1}{\left(x-2\right)\left(x-1\right)}dx$
$\sin2c\cdot\sin c=\cos c$
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